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Abstract

A transparent and emitting ceramic of Y<sub>2</sub>O<sub>3</sub> doped with
6% Tm<sup>3+</sup> ions is fabricated by vacuum sintering with ZrO<sub>2</sub>. Absorption,
photoluminescence (PL), and PL excitation (PLE) spectra are investigated in a
spectral range of 200 to 2 100 nm at various temperatures between 296 and 12 K.
Intense emission band appears at 450 to 465 nm in the visible range. Near-infrared
emission bands are observed at 1 200 to 1 300 nm and 1 400 to 1 550 nm, with intense
peaks at 1 270, 1 450, and 1 523 nm. The luminescence mechanisms and potential
applications of the emissions are discussed with the help of Judd-Ofelt theory and
PLE spectra.

References

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